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  <ul>
    <li><a href="#flutter-analyse">flutter analyse</a>
      <ul>
        <li><a href="#配置步骤">配置步骤</a></li>
        <li><a href="#使用">使用</a></li>
        <li><a href="#修复">修复</a></li>
        <li><a href="#参考配置">参考配置</a></li>
      </ul>
    </li>
    <li><a href="#dartfmt-命令">dartfmt 命令</a></li>
    <li><a href="#devtool介绍">DevTool介绍</a>
      <ul>
        <li><a href="#install-devtools">Install DevTools</a></li>
        <li><a href="#launch-the-devtools-application-server">Launch the DevTools application server</a></li>
        <li><a href="#start-an-application-to-debug">Start an application to debug</a></li>
        <li><a href="#open-devtools-and-connect-to-the-target-app">Open DevTools and connect to the target app</a></li>
      </ul>
    </li>
    <li><a href="#flutter-调试">flutter 调试</a>
      <ul>
        <li><a href="#纯flutter项目">纯flutter项目</a></li>
        <li><a href="#混合项目原生flutter">混合项目(原生+flutter)</a></li>
      </ul>
    </li>
    <li><a href="#参考">参考</a></li>
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    <article class="post">
        <header>
            <h1 class="post-title">《Flutter开发Tip4》</h1>
        </header>
        <date class="post-meta meta-date">
            2021年7月30日
        </date>
        
        <div class="post-meta">
            <span>|</span>
            
            <span class="meta-category"><a href='/categories/flutter'>flutter</a></span>
            
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            <span id="busuanzi_container_page_pv">|<span id="busuanzi_value_page_pv"></span><span>
                    阅读</span></span>
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                <div class="toc-title">文章目录</div>
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        </div>
        
        <div class="post-content">
            <blockquote>
<p>本文主要介绍flutter开发小技巧</p>
</blockquote>
<h2 id="flutter-analyse">flutter analyse</h2>
<h3 id="配置步骤">配置步骤</h3>
<ul>
<li>
<p>在项目更目录添加<code>analysis_options.yaml</code>文件可以配置lint规则和analyzer行为</p>
</li>
<li>
<p>具体支持的lint规则参考https://dart-lang.github.io/linter/lints/</p>
</li>
<li>
<p>目前有3类已经定义的常用规则</p>
<blockquote>
<p>Many lints are included in various predefined rulesets:</p>
</blockquote>
<ul>
<li><a href="https://github.com/dart-lang/pedantic">pedantic</a> for rules enforced internally at Google</li>
<li><a href="https://github.com/tenhobi/effective_dart">effective_dart</a> for rules corresponding to the <a href="https://dart.dev/guides/language/effective-dart">Effective Dart</a> style guide</li>
<li><a href="https://github.com/flutter/flutter/blob/master/packages/flutter/lib/analysis_options_user.yaml">flutter</a> for rules used in <code>flutter analyze</code></li>
</ul>
</li>
<li>
<p>推荐使用google团队内部的规则库pedantic</p>
<ul>
<li>在yaml里面添加依赖 <code>pedantic: ^1.8.0+1</code></li>
</ul>
</li>
<li>
<p>在<code>analysis_options.yaml</code>里面引入使用</p>
<blockquote>
<p><code>include: package:pedantic/analysis_options.1.8.0.yaml</code></p>
</blockquote>
</li>
</ul>
<h3 id="使用">使用</h3>
<p>配置好<code>analysis_options.yaml</code>文件的规则后,执行<code>flutter analyse</code>命令将对你整个项目或者package的代码进行静态分析</p>
<h3 id="修复">修复</h3>
<ul>
<li>根据提示修复</li>
</ul>
<p>点击提示的规则，就会跳转到需要修复位置，按照lint规则的说明和例子就可以修正了。<a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_analyse_2.png">
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png">
            <img class="mx-auto" alt="flutter_analyse_1" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png" />
        </a>
    </a></p>
<ul>
<li>利用VSCode快速修复</li>
</ul>
<p>在提示有问题的代码的地方<code>Ctrl +.</code>, 就会自动弹出快速修复，比如图中为增加<code>const</code>标识。 是不是快多了。<a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_analyse_1.png">
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png">
            <img class="mx-auto" alt="flutter_analyse_1" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png" />
        </a>
    </a><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_analyse_2.png">
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png">
            <img class="mx-auto" alt="屏幕快照 2020-09-17 上午2.24.55" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png" />
        </a>
    </a></p>
<h3 id="参考配置">参考配置</h3>
<p>当然你还可以根据你的需要定制自己的静态分析规则，下面是最近使用的一套配置，仅供你参考：</p>
<blockquote>
<p><a href="https://gist.github.com/wangruofeng/1451c04c0149fc229a726d819b3135c2">analysis_options.yaml参考配置</a></p>
</blockquote>
<h2 id="dartfmt-命令">dartfmt 命令</h2>
<ul>
<li><code>dartfmt ./ -w</code> 静态分析代码，并尝试自动修复</li>
<li><code>dartfmt ./ -n</code> 静态分析代码，不会修复代码</li>
</ul>
<h2 id="devtool介绍">DevTool介绍</h2>
<p>flutter提供了一个devTool系列工具，方便开发者进行调试，查看日志，网络请求，性能等信息，更多信息请参考<a href="https://flutter.dev/docs/development/tools/devtools/overview">DevTools</a></p>
<h3 id="install-devtools">Install DevTools</h3>
<ul>
<li><a href="https://flutter.dev/docs/development/tools/devtools/cli">Install from command line</a></li>
<li><a href="https://flutter.dev/docs/development/tools/devtools/android-studio">Install and run DevTools from Android Studio</a></li>
<li><a href="https://flutter.dev/docs/development/tools/devtools/vscode">Install from VS Code</a></li>
</ul>
<h3 id="launch-the-devtools-application-server">Launch the DevTools application server</h3>
<p>启动本地web服务</p>
<pre><code>pub global run devtools   # If you have `pub` on your path.
</code></pre><p>or</p>
<pre><code>flutter pub global run devtools   # If you have `flutter` on your path.
</code></pre><p>在命令行，你应该看到类似下面输出，表明服务启动成功</p>
<pre><code>Serving DevTools at http://127.0.0.1:9100
</code></pre><h3 id="start-an-application-to-debug">Start an application to debug</h3>
<p>运行app</p>
<pre><code>cd path/to/flutter/app
flutter run
</code></pre><p>一旦你成功运行起来你的app，你将在终端控制台看到如下类似的信息</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_01.png">
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png">
            <img class="mx-auto" alt="image-20200917151951722" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png" />
        </a>
    </a></p>
<p>用浏览器打开里面的地址，格式如下</p>
<blockquote>
<p>http://127.0.0.1:59681/fVO-_3yziG8=/</p>
</blockquote>
<p>打开将会看到下面的调试面板，可以根据自己的需要进行调试</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_02.png">
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png">
            <img class="mx-auto" alt="image-20200917152140975" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png" />
        </a>
    </a></p>
<p>这里有一个很有用的功能，【debug】</p>
<p>打开页面可以查看断点的帧和控制台的日志。</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_03.png">
        <a data-fancybox="gallery" href="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png">
            <img class="mx-auto" alt="image-20200917152456458" src="https://luckly007.oss-cn-beijing.aliyuncs.com/img/flutter_analyse_2.png" />
        </a>
    </a></p>
<h3 id="open-devtools-and-connect-to-the-target-app">Open DevTools and connect to the target app</h3>
<p>一旦工程运行起来了，在浏览器打开<a href="http://localhost:9100%EF%BC%8C%E6%89%93%E5%BC%80DevTools%E5%AE%8C%E6%95%B4%E7%89%88%E6%9C%AC/">http://localhost:9100，打开DevTools完整版本</a></p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_04.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_04.png">
            <img class="mx-auto" alt="image-20200917152646210" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_04.png" />
        </a>
    </a></p>
<p>输入上面的地址，点击Connect，跳转到完整devTools</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_05.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_05.png">
            <img class="mx-auto" alt="image-20200917152806254" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_05.png" />
        </a>
    </a></p>
<p>这里的功能非常强大和具体使用可以参考官方文档</p>
<h2 id="flutter-调试">flutter 调试</h2>
<p>这里以VSCode为例</p>
<h3 id="纯flutter项目">纯flutter项目</h3>
<p>纯flutter项目比较简单，VSCode支持各种devtool，使用debug模式运行app，或者直接按F5</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_06.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_06.png">
            <img class="mx-auto" alt="image-20200917150502934" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_06.png" />
        </a>
    </a></p>
<p>运行成功后会出现一下工具条</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_07.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_07.png">
            <img class="mx-auto" alt="image-20200917150559335" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_07.png" />
        </a>
    </a></p>
<p>控制台输出以下内容</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_08.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_08.png">
            <img class="mx-auto" alt="image-20200917150622481" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_08.png" />
        </a>
    </a></p>
<p>例如这里我们在这个文件107行直接下一个断点，代码执行到时会触发断点</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_09.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_09.png">
            <img class="mx-auto" alt="image-20200917150821892" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_09.png" />
        </a>
    </a></p>
<p>此时工具栏变成下面的样式</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_10.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_10.png">
            <img class="mx-auto" alt="image-20200917150846708" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_10.png" />
        </a>
    </a></p>
<p>可以通过相关的按钮进行断点调试</p>
<h3 id="混合项目原生flutter">混合项目(原生+flutter)</h3>
<ol>
<li>
<p>打开已经编译运行过的原生端App</p>
</li>
<li>
<p>通过VSCode打开壳工程，进入壳工程根目录</p>
</li>
<li>
<p>选择main.dart文件</p>
</li>
<li>
<p>执行cmd+shift+p,呼出VSCode命令面板，输入<code>&gt;attach to flutter onDevice</code></p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_11.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_11.png">
            <img class="mx-auto" alt="image-20200917153401365" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_11.png" />
        </a>
    </a></p>
<p>选择下面的对应的命令执行</p>
<blockquote>
<p>如果attach不上请断开wifi重试</p>
</blockquote>
</li>
<li>
<p>Attach 成功的话会显示下面一条悬浮工具栏和纯flutter相比里面多了一个类似插头的按钮</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_12.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_12.png">
            <img class="mx-auto" alt="image-20200917153656732" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_12.png" />
        </a>
    </a></p>
<p>Debug Console控制台也会输出下面信息</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_13.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_13.png">
            <img class="mx-auto" alt="image-20200917153719698" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_13.png" />
        </a>
    </a></p>
</li>
<li>
<p>剩下的调试和上面DevTool介绍的流程一致</p>
</li>
<li>
<p>在这个项目里面可以直接对引用到的代码进行断点调试</p>
<p><a href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_14.png">
        <a data-fancybox="gallery" href="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_14.png">
            <img class="mx-auto" alt="image-20200917154306797" src="https://blog.wangruofeng007.com/images/flutter_tips_s2/flutter_tips_14.png" />
        </a>
    </a></p>
</li>
</ol>
<h2 id="参考">参考</h2>
<ul>
<li><a href="https://pub.dev/packages/analyzer">analyzer</a></li>
<li><a href="https://dart.dev/tools/dartfmt">dartfmt</a></li>
<li><a href="https://juejin.im/post/6844904176162439182#heading-11">Flutter Analysis Options</a></li>
<li><a href="https://dart.dev/guides/language/analysis-options">Customizing static analysis</a></li>
<li><a href="https://stackoverflow.com/questions/63914819/how-to-access-assets-in-package">How to access assets in package</a></li>
<li><a href="https://flutter.dev/docs/development/tools/devtools/overview">DevTools</a></li>
</ul>
        </div>

        
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        <li style="word-break:break-all"><strong>原文链接：</strong><a href="https://luckly.work/post/flutter%E5%BC%80%E5%8F%91Tip4/">https://luckly.work/post/flutter%E5%BC%80%E5%8F%91Tip4/</a></li>
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<div class="post-archive">
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        <li><a href="/post/flutter%E5%BC%80%E5%8F%91Tip3/">《Flutter开发Tip3》</a></li>
        
        <li><a href="/post/flutter%E5%BC%80%E5%8F%91Tip2/">《Flutter开发Tip2》</a></li>
        
        <li><a href="/post/flutter%E5%BC%80%E5%8F%91Tip1/">《Flutter开发Tip1》</a></li>
        
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        <li><a href="/post/flutter%E6%9C%80%E4%BD%B3%E5%AE%9E%E8%B7%B5%E6%95%B4%E7%90%864/">《Flutter最佳实践整理4》</a></li>
        
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